WATCH: Helen's amazing sky walk!
Blue Peter's Helen Skelton has smashed ANOTHER world record to help raise cash for Comic Relief - this time with a daredevil high wire walk.
Helen's become the first person to walk between the chimneys of London's Battersea Power Station on a tightrope.
Her daring challenge on the 18mm-thick wire, which was a dizzying 66 metres in the air, also set a new UK record for the highest wire walk by a female.
She completed the 150m walk in just 11 minutes on Monday 28 February.
Her Red Nose Day charity challenge was delayed by 40 minutes because of high winds.
When she finally got under way, the 27-year-old kept up a steady speed - despite her eight-metre long balance pole swaying in front of her.
It's not the first time Helen has completed a physically exhausting challenge for charity.
Last year she raised money for Sport Relief by becoming the first person to kayak down the Amazon on their own.
And she's only the second woman ever to complete the 78-mile ultra marathon in the Namibian desert.